Oxygen-acetylene welding-torch



Patented Nov. 30, 1920.

c. MOLAS. OXYGEN ACETYLENE WELDING TORCH.

APPLICATION FILED MAR. 29. I9I8- UNITED STATES PATENT OFFICE.

CLODION MOLAS, QF LOS ANGELES, CALIFORNIA, ASSIGNOR, BY MESNEASSIGNMENTS, TO CALIFORNIA BURDE'IT OX Y GEN COMPANY, A CORPORATION OFCALIFORNIA.

OXYGEN-ACETYLENE WELDING-TORCH.

. To-all whom it mag concern;

Be it known that I, CLODION MoLAs, a citizen of the Republic of France,and a resident of Los Angeles in the county of Los Angeles and State of.alifornia, have invented new and usefullmprovements in Oxygen-AcetylenelVelcling-Torches, of which the following is a specification.

This invention relates to oxygen acetylene welding torches. p

An important object" f'the invention is to provide in. a device ofi bovementioned character a means 'whe what is commonly known as back-firingwill be eliminated to the highest possible degree.

A'further object of the invention is to provide in .a device of. theabove mentioned character a means whereby the device as a whole maybeused to produce equally as an efficient result when'operating under alow pressuresupply of oxygen or gas or when a high pressure is employed.

A urther object is to provide in a device of the above mentionedcharacter a means whereby the oxygen or gas supply may be regulatedindependently with respect to each other thereby enabling the operatorto maintain an even volumetric flow of oxygen or gas regardless of thesupply pressure of either.

Another object of the invention is to provide in a device of the abovementioned character a means whereby either the oxygen or gas supply maybe easily regulated independently with respect to each other withoutnecessitating a discontinuance in the useof the device by the operatorthereof. I

Another object is to provide a device of the above mentioned characterwhich is sim ple in construction, inexpensive to manu facture, strong,durable, and reliable in operation. i x

Other objects and advantages of the invention will be apparent duringthe course of-the following description.

' In the accompanying drawings, forming a part of this specification andin which like numerals are employed to designate like parts through thesame,

Figure 1 s alongitudinal sectional view of :1 device embodying myinvention,

Fig. 21sas1de'elevat1on of the same, Fig, 31sanenlarged detail sect onalview of a valve mechanism, and,

Specification of Letters Patent.

Patented Nov. 30, 1920.

" Application filed March 29, 1918. Serial No. 225,512.

Fig. 4 is a sectional View taken on line 4-4: of Fig. 1.

In the drawings, wherein for the purpose of illustration is shown apreferred form of my invention, the numeral 5 indicates a main body ofthe device provided therein with longitudinally extending passages 6 and7 the passage 6 being adapted to be supplied with acetylene or othergas, a suitable supply of which is connected with a screwthreaded nipple8 while the passage 7 is adapted to be supplied with oxygen, a suit ablesupply of which is connected'with a screw-threaded nipple 9. To one endof the main body 5 is connected an adjustable pipe section 10 providedcentrally therein with a longitudinally extending opening 11. To theforward end of the ,pipe section 10 is connected a second pipe section12 having suitable connection with the conventional form of nozzle 13.The main body 5 is provided with an angularly disposed valve chamber 14communicating with the passage 7 as shown. This valve chamber 14 isprovided with a counterbore 15 extending an appreciable distance intothe main body 5 and communicating with the passage 6 and the duct 16having connection with the passage 11 provided by the pipe section 10.It will be' noted that the counterbore 15 is slightly tapered at thejointure of the passage G and the duct 16 therewith. Within.

the valve chamber l i there is fitted a packposed, the bushing 18 beingprovided upon 1 its peripheral face with a groove 19. This bushing 18 isprovided interiorly thereof" -with a circular depression 20.

outer'en'd of the bushing 18 is disposed a sec- 0nd packing ring 21maintained in engagef the interior 28 of the sleeve 24. A plurality Uponthe mg ring 17 upon which a bushing 18 is ime in connection with thehereinafter described operation of the device as a whole. The outer endof the sleeve 24 is provided with a head 30 to which is secured ahand-wheel 31. This head is formed with an opening therein to receive apacking ring 32 maintained in engagement with a screw-threaded plug 33carried therein. An elongated needle valve 3% is rotatably carriedwithin the screw-threaded plug 33 extending into the sleeve 24 and isprovided with a tapered end 35 adapted to seat within the opening 27 asclearly shown in Fig. 1. The needle valve 34: is provided substantiallyintermediate its ends with screw-threads having screw-thread engagementwith the interior of the sleeve valve 24 as shown at 36 while the outerend is provided with a hand-wheel 37, the function of which will bereadily understood when considering the hereinafter described operationof the device as a whole.

In use, the operation of the device is as follows: Acetylene or othergas and oxygen is supplied to the passages 6 and 7 respectively, in aconventional manner, the acetylene passing into the counterbore 15 andthen into the duct 16, assuming of course, that the valve sleeve 24 ismaintained in the position shown in Fig. 8. As the oxygen passes throughthe passage 7 it is directed into the interior 28 of the sleeve valve 21,

valve 24, respectively, whereupon it passes onwardly througl-ithe sleevevalve 241 and is ejected therefrom through the "opening 2?, assuming ofcourse, that the needle valve 34 is maintained in the position clearlyshown in Fig. 3, whereupon the oxygen is mixed with the acetylene orother gas in its passing from the passage 6 into the opening 16. Theoxygen and acetylene and other gas having been mixed at the jointure ofthe passage 6 and duct 16 with the counterbore 15 pass onwardly throughthe duct 16 and into the.

opening 11 whereupon it is directed through the pipe section 12 into andout of the nozzle 13 in the conventional manner. In considering theaccompanying drawings together with the specification of the same itwill be readily'understood that a very delicate adjustment may be had ofeither the oxygen or the acetylene or other gas by adjusting the sleevevalve 24 through the vinstrumentality of the hand-wheel 31 or byadjusting the needle valve 3% through the instrumentality of thehand-wheel 37.

It is to be understood that the form of my invention herewith shown andvdescribed is to be taken as a preferred example of the same, andthatvarious changes in the shape, size and arrangement of parts mayberesorted to without departing from the spirit of the invention or thescope of the sub joined claims.

Having thus described my invention, what I claim as new and desire tosecure and protect by Letters Patent of the United able needle valvecarried within said sleeve valve and adapted for severing communicationbetween said duct, one of said passages and the remainder of saidpassages; a packing ring carried within said valve chamber at each endof said bushing; and means for retaining said bushing and packing ringswithin said valve chamber.

2. A. device of the character described comprising a main body providedwith a duct, a plurality of passages, a counterbore and a valve chamber,said duct and passages being arranged for communication one with theother; an adjustable sleeve valve having openings therein carried withinsaid counterbore and extending outwardly through said valvechamber, saidsleeve valve being adapted to sever communication between saidductand'one of said passages; a bushing on said sleeve valve havingopenings therein communicating with the openings in said sleeve valve,means for preventing the escape of gas along said sleeve valve beyondthe ends of said bushing; a head carried by said sleeve valve at theother end thereof; an adjustable needle valve carried within said sleevevalve and adapted for severing communication between said duct, one ofsaid passages and the remainder of said passages, said needle valveextending outwardly through said head; a packing ring carried withinsaid head and encircling said needle valve; and means for retaining saidpacking ring within said head.

3. A device of the character described comprising a main body providedwith a valve chamber communicating at its inner end with a mixture ductand having a pas sage for acetylene or other gas communicating with thevalve chamber at its inner end adjacent the duct and having a passagefor oxygen communicating with the valve chamthereher, a sleeve valvearranged to close communication between the acetylene passage and theduct, said sleeve valve being provided with openings therein, a bushingon said sleeve valve having a plurality of 0 enings therethrough formingpassages f i'o-m said oxygen passage to the openings in the sleevevalve, means for preventin the flow of oxygen beyond the ends of saibushing, and a needle valve in said sleeve valve for controlling thepassage of oxygen from the interior of the sleeve valve to said duct.

4. A device of the character described comprising a body having amixture duct and a valve chamber, said body also having an acetylene orother gas supply passage and an oxygen supply passage, a sleeve valve insaid valve chamber, havin a conical end arranged to cooperate wit avalve seat formed in the inner end of said valve chainber, to regulatethe passage of acetylene or other gas from its supply passage to saidduct, a bushing on said sleeve valve having a plurality of openingstherethrough communicating at their outer ends with a circular grooveand at their inner ends with a circular depression, said move anddepression being formed in said bushing and said groove being in opencommunication with the oxygen supply passage, said sleeve valve having aplurality of openings in its walls arranged to cooperate with thedepression in the bushin to vary the flow of oxy en through the ushing,and a needle vzfive within said sleeve valve arranged .to control thepassage of oxygen to said duct from the interior of the sleeve valvethrough an opening in the inner end of the sleeve valve.

CLODION MOLAS.

